Clock and watch.



R. B. HANSELL.

CLOCK AND WATCH. rPLIoATIoN FILED JUNEVQ, 1909.

961,957. Patented Jun@ 21, 191o.

s f Y ls: Z A is A n l NVENTOR y WJTNESSES.:

, 'l I I f v ff" Aflomey ROBERT B. HANSELL, OF`BALTIMORE, MARYLAND.

CLOCK AND WATCH.

Specification of Letters Patent.

Patented June 21,1v 1910.

Application filed June 9, 1909. Serial No. 501,108.

To all wwm it may concern: A

Be it known that I, ROBERT B. HANSELL, of the city of Baltimore and State of Maryland, 'have invented certain Improvements in Clocks and Watches, of which the following is a specification.

This invention relates to improvements in that class of clocks and watches in which a system-wf figures together with an indicating point, are inscribed on a surface which for a better name, I term a chart, and is susceptible of rotation about, and independently of the central staff carrying the hour and minute hands, and whereby certain information with respect to the duration and lapse of time, is ascertained after setting the indicator in radial alinement withthe minute hand of the clock when the same is running.

In ther description of the said invention which follows, reference is made to the accompanying drawing, forming a part herel' of, and in which,-

Figure 1 is a* face view of a clock constructed after the manner of the present invention, a portion yof which is torn away to illustrate in section the parts beneath. Fig.

2 isan enlarged section of Fig. 1 taken on the dotted line :1J-w, except that the part torn away in that figure, is replaced. Figs. 3 and 4 are views similar to Fig. 2, illustrat- -ing alternate constructions of the invention, as hereinafter described.

Referring now to Figs. 1 and 2 of the drawing, 1 1s the shell or case of an ordinary clock, and Qthe dial. 73 is an expansible ring' secured to the case 1, and 4 the bezel which carries the glass or crystal 5. The periphery of the part a of the bezel is slightly flared to correspond with the inwardly projecting inclined surface of the ring with which it is in contact, to hold the bezel in place and yet allow of its rotation independently of `the ring and the case. 7 is an annular chart formed as a part of and extending inward from the bezel 4; and its inner diameter is such that it laps over the outer circular edge of the dial 2, as shown in Fig. 2.

By reference to Fig. 1 it will be seen that the chart is inscribed with iigures 1n two circular rows, the figures on the outer row beginning with 1, and running u to 60, the increase being to the left, while 1n the inner row the figures increase to the right. 1G is an indicating mark which takes the place of the number 60, and answers the pur ose of a pointer, when the bezel carrying t e chart is turned to any particular position with respect to the figures on the dial, the minute spaces between them, orthehands of the clock. The arrangement of the gures on lthe chart however, constitutes no 4part of the present invention, and their illustration is only to indicate that there is some purpose to be attained in setting the pointer in some arbitrarily selected position with respect to the figures on the dial or the hands lof the clock. The bezel 4 which is sprung into position as is, commonly done in the attachment of a watch crystal to its bezel, is preferably milled at the edge to facilitate its movement /by the fingers. It is desirable that when the pointer is set opposite any minute division of the dial, that it should resist accidental movement ineither direction, and I therefore provide the portion a of the bezel with sixty notchesv b, and provide the case 1 with a spring-held V-shaped i toothA c adapted to enter any one of the notches.

In Fi case with an inwardly-extending flange d, and to the underside ofthe bezel, I'. secure by means of screws, a ring e the overhanging portion of which is directly under the flange. With this construction the bezel with the chart can be turned in either direction as in Fi 2.

ig. 4 shows the invention as applied to a watch, and the means of attaching the bezel to the case of the watch is similar to thatv employed in Fig. 3.

It will be seen that in the various constructions shown and described there is and a lower surface in the bezel; and where' 3 I vprovvide the edge of the clock the expansible ring 3 is not depended upon to provide the inner projection of the case, and the bezel formed of one pieceas shown in Figs. 1 and 2, the removable ringk e is used and screws employed to hold the said ring in place.

I claim as my invention,-

1. In combination with the case of a clock or watch, a rotary bezel carrying a chart, the outer edge of which beze is provided with an annular recess having an upper and a lower surface, in which rests the inwardly projecting edge of thesaid case, /substanf or Watch, a bezel carrying an annular chart, and'provided With` a removable ring on its underside whereby an annular recess in the bezel is produced in' Which the "edge of lche case rests, and screws to hold the ring in l5 place, substantiall as specified.

R BERT B. HANSELL. Witnesses:

THOMAS G.' HULL, WM. T. HOWARD. 

